JSFiddle - React, Tailwind, and code Playground

HTML

<div id="parent" data-bind="click: log">Parent Div<div id="child">Child</div></div>

JavaScript

var ViewModel = function() {
    this.log = function(data, event) {
        console.log("you clicked " + event.target.id);
    }
};
ko.applyBindings(new ViewModel());